US11990560B2ActiveUtilityA1

Method of manufacturing light-emitting device, light-emitting device, and light source device

66
Assignee: NICHIA CORPPriority: Nov 15, 2018Filed: Jul 8, 2022Granted: May 21, 2024
Est. expiryNov 15, 2038(~12.4 yrs left)· nominal 20-yr term from priority
H10W 90/00H10W 90/724H10H 20/856H10H 20/84H10H 20/83H10H 20/01H10H 20/0364H10H 20/0363H10H 20/857H10H 20/0362H10H 20/855H10H 20/854H10H 20/851H10H 20/814H10H 29/142H01L 33/0095H01L 25/0753H01L 33/60H01L 33/62H01L 2933/0058H01L 2933/0066
66
PatentIndex Score
0
Cited by
25
References
18
Claims

Abstract

A light-emitting device includes: a structure including: a layered body including: a light-emitting element comprising a pair of electrodes, and a light-transmissive member disposed on the light-emitting element; and a light-reflective member covering lateral surfaces of the layered body, in which structure has a first surface at which the pair of electrodes are exposed from the light-reflective member, and a second surface connected to the first surface, the second surface being a surface of the light-reflective member. A pair of first electrically conductive films disposed on the first surface of the structure such that each of the pair of first electrically conductive films is connected to a respective one of the pair of electrodes. A pair of second electrically conductive films disposed on the second surface of the structure, each of the pair of electrically conductive films being continuous with the pair of first electrically conductive films.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A light-emitting device comprising:
 a structure comprising:
 a layered body comprising:
 a light-emitting element comprising a pair of electrodes, and 
 a light-transmissive member disposed on the light-emitting element; and 
 
 a light-reflective member covering lateral surfaces of the layered body, 
 wherein the structure has a first surface at which the pair of electrodes are exposed from the light-reflective member, and a second surface connected to the first surface, the second surface being a surface of the light-reflective member; 
 
 a pair of first electrically conductive films disposed on the first surface of the structure such that each of the pair of first electrically conductive films is connected to a respective one of the pair of electrodes; and 
 a pair of second electrically conductive films disposed on the second surface of the structure, each of the pair of second electrically conductive films being continuous with the pair of first electrically conductive films; wherein: 
 at the second surface of the structure, a recess is recessed into the light-reflective member; and 
 a gap is formed between the pair of second electrically conductive films directly adjacent to the recess. 
 
     
     
       2. The light-emitting device according to  claim 1 , wherein a first region of the second surface at a side corresponding to the pair of electrodes is recessed inward relative to a second region of the second surface at the light-transmissive member. 
     
     
       3. A light source device comprising:
 the light-emitting device according to  claim 2 ; 
 a mounting board facing the second surface of the structure; and 
 a bonding member disposed between the mounting board and the first region to bond the second electrically conductive films to the mounting board. 
 
     
     
       4. The light-emitting device according to  claim 1 , wherein the light-transmissive member comprises a layered structure in which a phosphor layer and a light-transmissive layer are layered. 
     
     
       5. The light-emitting device according to  claim 1 ,
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the pair of second electrically conductive films are apart from the light extraction surface. 
 
     
     
       6. The light-emitting device according to  claim 1 , further comprising:
 a reflective material containing a light-reflective substance; 
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the reflective material is disposed on the light extraction surface directly above the light-emitting element. 
 
     
     
       7. The light-emitting device according to  claim 6 , wherein the reflective material is disposed in a region spaced apart from edges of the light-transmissive member. 
     
     
       8. The light-emitting device according to  claim 2 , wherein the light-transmissive member comprises a layered structure in which a phosphor layer and a light-transmissive layer are layered. 
     
     
       9. The light-emitting device according to  claim 2 ,
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the pair of second electrically conductive films are apart from the light extraction surface. 
 
     
     
       10. The light-emitting device according to  claim 2 , further comprising:
 a reflective material containing a light-reflective substance; 
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the reflective material is disposed on the light extraction surface directly above the light-emitting element. 
 
     
     
       11. The light-emitting device according to  claim 10 , wherein the reflective material is disposed in a region spaced apart from edges of the light-transmissive member. 
     
     
       12. The light source device according to  claim 3 , wherein the light-transmissive member comprises a layered structure in which a phosphor layer and a light-transmissive layer are layered. 
     
     
       13. The light source device according to  claim 3 ,
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the pair of second electrically conductive films are apart from the light extraction surface. 
 
     
     
       14. The light source device according to  claim 3 ,
 wherein the light-emitting device further comprises a reflective material containing a light-reflective substance; 
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the reflective material is disposed on the light extraction surface directly above the light-emitting element. 
 
     
     
       15. The light source device according to  claim 14 , wherein the reflective material is disposed in a region spaced apart from edges of the light-transmissive member. 
     
     
       16. The light-emitting device according to  claim 4 ,
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the pair of second electrically conductive films are apart from the light extraction surface. 
 
     
     
       17. The light-emitting device according to  claim 4 , further comprising:
 a reflective material containing a light-reflective substance; 
 wherein the structure has a light extraction surface opposite to the first surface and connected to the second surface; and 
 wherein the reflective material is disposed on the light extraction surface directly above the light-emitting element. 
 
     
     
       18. The light-emitting device according to  claim 17 , wherein the reflective material is disposed in a region spaced apart from edges of the light-transmissive member.

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